GLM / Z.ai (Zhipu AI) vs Napkin AI

GLM / Z.ai (Zhipu AI) is the clear winner: 8.0/10 (A-tier) versus 7.0/10 (B-tier). Napkin AI isn't a bad tool, but on every category that drives the overall score, GLM / Z.ai (Zhipu AI) comes out ahead. The tier gap is repeatable -- not methodology noise -- and the day-to-day experience reflects it.

Pricing-wise, both tools have a free tier (GLM / Z.ai (Zhipu AI) starts $0, Napkin AI starts $0), so you can test either without committing. Compare what each free tier actually unlocks -- usage caps, model access, and feature gates differ a lot more than the headline price suggests, especially as both vendors have tightened limits in 2026.

By use case: pick GLM / Z.ai (Zhipu AI) when teams that need genuine mit-licensed frontier open weights with no commercial strings. Pick Napkin AI when content creators, marketers, and consultants who need quick visuals from text without touching a design tool. The two tools aren't fighting for the same person -- they're aiming at adjacent jobs that occasionally overlap. If you're squarely in GLM / Z.ai (Zhipu AI)'s lane, the tier-list ranking and the use-case fit point the same direction; if you're in Napkin AI's lane, the score gap matters less than the fit.

Bottom line: GLM / Z.ai (Zhipu AI) is the better tool for most people right now. Pick Napkin AI only when content creators, marketers, and consultants who need quick visuals from text without touching a design tool -- that's its lane, and inside that lane it still earns its place.